The forms bullying takes also differs between genders.
Boys tend to be more physically violent, while girls tend to favour verbal abuse, teasing and social exclusion, explains child psychologist, Dr Richard Woolfson.
One of the telltale signs that a young child is being bullied is an uncharacteristic change in her behaviour.
But it can also be due to bullying ? if all other explanations have been ruled out, then this may be the reason underlying the change in her behaviour.